This is a pattern I lifted from a leather bracelet I once had. In my earlier days of tape craft I liked to apply various patterns and ideas from other disciplines to my duct tape work. This is one of the results.
Step 1: Tools and Materials
Step 2: Base Elements
First tear off a length of duct tape easily more than long enough to travel around your wrist. Split it down the middle lengthwise into two equal strips. Fold each of these strips in half, lengthwise with the sticky sides in to make two equal length silver ribbons. Cut off the ends to clean up those edges.
Step 3: Starting It Off
On the bottom ribbon, find the end sitting below the cut you just made. Fold the end of that bottom ribbon by its crease and feed it through the slit. Stop pulling it through when the ends of the top and bottom parts match. Allow the ribbon to unfold, but make sure the part that passes through the slit remains folded.
Step 4: The Pattern
Take the long end of the top ribbon and pass it through the new slit, folding it in half just as before. Pull it through as far as it will go.